Try re-enabling a load-and-launch browser test for win & linux

BUG=176897

Review-Url: https://codereview.chromium.org/2386313003
Cr-Commit-Position: refs/heads/master@{#422833}

apps/load_and_launch_browsertest.cc

@@ -171,20 +171,9 @@ class LoadAndLaunchExtensionBrowserTest : public PlatformAppBrowserTest {
 
 }  // namespace
 
-
-// TODO(jackhou): Make this test not flaky on Vista or Linux Aura. See
-// http://crbug.com/176897
-#if defined(OS_WIN) || (defined(OS_LINUX) && defined(USE_AURA))
-#define MAYBE_LoadAndLaunchAppChromeNotRunning \
-        DISABLED_LoadAndLaunchAppChromeNotRunning
-#else
-#define MAYBE_LoadAndLaunchAppChromeNotRunning \
-        LoadAndLaunchAppChromeNotRunning
-#endif
-
 // Case where Chrome is not running.
 IN_PROC_BROWSER_TEST_F(LoadAndLaunchPlatformAppBrowserTest,
-                       MAYBE_LoadAndLaunchAppChromeNotRunning) {
+                       LoadAndLaunchAppChromeNotRunning) {
   LoadAndLaunchApp();
 }